package com.example.demo.service.impl;

import com.example.demo.entity.CertificateEneity;
import com.example.demo.service.PageService;
import org.springframework.stereotype.Service;

@Service
public class PageServiceImpl implements PageService {
    @Override
    public CertificateEneity selectCertificateMsg(String serialNumber) {
        return null;
    }
}
